Welding Equipment

Welding equipment in this section covers the arc welding power sources, plasma cutters, orbital systems and pipe preparation machines used by fabrication shops, pipeline crews and plant maintenance teams. Seven Star LLC, an independent industrial supplier in Muscat, Oman, lists welding machines from Miller, Kemppi, Hypertherm, Orbitalum and Polysoude here, along with single models from several other manufacturers.

The group is split into ten sub-categories, so a buyer can go straight to the process named in the welding procedure or the work scope.

Arc welding machines by process

MIG/MAG welding machines feed a continuous wire and are the usual choice for structural steel and shop production. TIG welding machines give the pool control needed for root passes, thin-wall stainless and aluminum, with AC/DC models for the last of these. Stick (MMA) welding machines need no shielding gas, which keeps them in use for site repair and erection. Multi-process welding machines put constant-current and constant-voltage output in one power source for crews that change process from job to job. Engine-driven welders carry their own diesel or gasoline engine for pipeline right-of-way and remote well sites with no mains supply.

Cutting, pipe preparation and mechanized welding

Plasma cutting systems run from portable air plasma units to mechanized systems for CNC tables. Pipe cutting and beveling machines produce square, clean ends, the starting point for orbital pipe welding systems, which rotate a TIG arc around tube, pipe or tube-to-tubesheet joints under a stored program. Induction heating and preheating equipment controls preheat and interpass temperature on thick-wall and chrome-moly joints. Welding robots and automation covers six-axis arc welding robots for repeat production.

What to send for a welding machine quotation

Give us the process, the base material and thickness range, the welding current you need and roughly how many minutes in ten the arc is on, and the site supply (voltage, phase, frequency or generator rating). Say if you need a wire feeder, water cooling, a remote control or a particular cable length. For projects elsewhere in the GCC, mention the destination and any client specification the machine must meet. We check the part number and package contents against the manufacturer documentation before quoting.